منابع مشابه
ATCA ⋆ H i Observations of the Peculiar Galaxy IC 2554
ATCA H i and radio continuum observations of the peculiar southern galaxy IC 2554 and its surroundings reveal typical signatures of an interacting galaxy group. We detected a large H i cloud between IC 2554 and the elliptical galaxy NGC 3136B. The gas dynamics in IC 2554 itself, which is sometimes described as a colliding pair, are surprisingly regular, whereas NGC 3136B was not detected. The H...
متن کاملPulsating red giant and supergiant stars in the Local Group dwarf galaxy Andromeda I
We have conducted an optical long-term monitoring survey of the majority of dwarf galaxies in the Local Group, with the Isaac Newton Telescope (INT), to identify the long period variable (LPV) stars. LPV stars vary on timescales of months to years, and reach the largest amplitudes of their brightness variations at optical wavelengths, due to the changing temperature. They trace stellar populati...
متن کاملATCA ⋆ H i Observations of the NGC 6845 Galaxy Group
We present the results of ATCA H i line and 20-cm radio continuum observations of the galaxy Quartet NGC 6845. The H i emission extends over all four galaxies but can only be associated clearly with the two spiral galaxies, NGC 6845A and B, which show signs of strong tidal interaction. We derive a total H i mass of at least 1.8×10 M⊙, most of which is associated with NGC 6845A, the largest gala...
متن کاملThe Proper Motion of the Local Group Galaxy IC 10
We have measured the proper motion of the Local Group galaxy IC 10 with the Very Long Baseline Array by measuring the position of an H 2 O maser relative to two background quasars over 4.3 years. After correction for the rotation of the Milky Way and IC 10, we obtain a motion of –39±9 µas yr −1 toward the East and 31±8 µas yr −1 toward the North. This corresponds to a total space velocity of 21...
متن کاملROSAT observations of the IC 4329 A galaxy group ?
We report here the results of high-resolution and spectral imaging X-ray observations, with both the ROSAT HRI and PSPC, of the field surrounding the nearby (D = 64Mpc) type 1 Seyfert galaxy IC 4329A and its giant lenticular companion IC 4329. Many point sources are detected, the brightest being associated with IC 4329A itself, having an extremely bright X-ray luminosity of 6 × 1043 erg s−1, an...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx2475